Fluoride is among the most confusing chemicals added to drinking water. While low concentrations protect against tooth decay, studies also indicate that added fluoride may have adverse effects at elevated levels.

Water supplies for more than 7 million Americans in 27 states are contaminated with 1,4-dioxane. This industrial chemical has been detected at levels higher than what federal scientists say poses a minimal lifetime risk of cancer, according to an EWG analysis.

Whether it stinks like rotten eggs or bleach, smelly water might have you worried. The exact cause of water odors can be challenging to determine. Therefore, we have created a handy guide to help you identify and treat common causes of household water smells.

When was the last time you used soap, shampoo, or body lotion? Unless you're reading ingredient labels like a hawk–we're here to tell you that chemicals from these products end up on your skin, in the environment, and potentially even our drinking water.

Have you ever turned on your faucet and been hit with the smell of rotten eggs? The culprit is sulfur. While it’s definitely a nuisance, this unpleasant smell is not usually indicative of any health risks at the concentrations found at your tap. Learn about what causes this smell, the health effects, and how to get rid of it.